Advanced Graphene Composite Paste Electrode for Amaranth Dye Detection with Tartrazine

Even while synthetic dyes have garnered a lot of interest due to their wide variety of uses, excessive use of them poses a serious health risk to individuals in many nations. Monitoring is crucial as a result. The poly(alanine)-modified graphene composite paste electrode (PAGCMPE), a highly sensitive repeatable electrochemical sensor, was used to concurrently measure two common colors, amaranth and tartrazine. The distinctive characteristics of graphene composite paste are its remarkable porosity, suitable conductivity, and enormous surface area. The electrochemical behavior of the suggested electrode was examined using cyclic voltammetry and electrochemical impedance spectroscopy. The paste was evaluated by looking at the electrode's surface using scanning electron microscopy. Under ideal conditions, the improved sensor showed a broad linear concentration range of 0.2-9.0 mu M with a low detection limit of 0.289 mu M. The simultaneous detection of amaranth and tartrazine using PAGCMPE gave two distinct peaks depicting the good selectivity of the developed electrode. The selectivity of the developed sensor toward amaranth was high in the presence of possible interferents. This method effectively identified the target analyte in actual samples, yielding satisfactory outcomes between 97.43% and 101.73%.[GRAPHICS].